2x-4/(x^2-4x-5)=A/(x-5)+B/(x+1),x≠5,-1.A.B的值是
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x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
matlab中a(x)=x^4+3x^3+9x-18 b(x)=x^5-4x^3-18x+7 c(x)=x^7+6x^5+9x^3-5x^2-2 d(x)=x^9-8x^7+6x^5-4x^4+d(x)=x^9-8x^7+6x^5-4x^4+6x^2+3 求e(x)=a(x)*b(x)*c(x)*d(x)
( A/X-5 ) + ( B/X+2 ) = 5X-4/X^2-3X-10 ^-^
4x+1/(x-2)(x-5)=a/x-2+b/x-5
(x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3)
x-2x+3x-4x+5x.+99x-100x=25求解
2x+3x+4x+5x+x+6x+7x=100
x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x
若集合A={x|x^2-5x+4}
若集合A={x|x^2-5x+4}
已知集合A={x|x^2-5x+4
已知集合A={x|x^2-5x+4
已知集合A={x|x^2-5x+4
知集合A={x|x^2-5x+4
知集合A={x|x^2-5x+4
已知A={X|X^-X-2>0}B={X|X^+4X-P
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?